Piezoelectric device and method for manufacturing piezoelectric device

1. A piezoelectric device, comprising:

a container, the container including a step portion that surrounds a bottom portion to define a recessed area within the container;

a piezoelectric resonator element accommodated in the container, a free end of the piezoelectric resonator overlapping the step portion;

a circuit element accommodated in the container so as not to overlap with the piezoelectric resonator element in a plan view; and

a mounting stage to which the piezoelectric resonator element is fixed, the mounting stage being fixed on the bottom portion inside the container.

2. The piezoelectric device according to claim 1 , wherein the mounting stage is disposed adjacent to the circuit element, and the piezoelectric resonator element is fixed to the mounting stage so as to extend to a side opposite to a side where the circuit element is disposed.

3. The piezoelectric device according to claim 2 , wherein: the piezoelectric resonator element includes an excitation electrode and a leading electrode coupled to the excitation electrode; the mounting stage includes a connection electrode coupled to the leading electrode of the piezoelectric resonator element; and the circuit element includes a connection terminal coupled to the connection electrode of the mounting stage by a metal wire.

4. The piezoelectric device according to claim 1 , wherein the mounting stage is fixed inside the container by an adhesive.

5. The piezoelectric device according to claim 1 , wherein the piezoelectric resonator element is fixed to the mounting stage in a cantilever fashion and the container includes, inside the container, a supporting portion that is contactable with an end portion of the piezoelectric resonator element.

6. A method for manufacturing a piezoelectric device, comprising:

fixing a mounting stage to a bottom portion of a container in which a piezoelectric resonator element and a circuit element are accommodated so as not to overlap with each other in a plan view, the container including a step portion that surrounds the bottom portion to define a recessed area within the container;

fixing the piezoelectric resonator element to a connection electrode of the mounting stage, a free end of the piezoelectric resonator element overlapping the step portion;

fixing the circuit element to the bottom surface of the container;

coupling a connection terminal of the circuit element and the connection electrode of the mounting stage by a metal wire; and

air-tightly sealing the container with a lid.